:root {
  --color-primary: #2563eb;
  --color-primary-soft: #e0ecff;
  --color-secondary: #0f172a;
  --color-bg: #f9fafb;
  --color-text: #111827;
  --color-muted: #6b7280;
  --color-border: #e5e7eb;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--color-text);
  background-color: #ffffff;
}

/* Layout */

.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 4rem 0;
}

.section-light {
  background-color: var(--color-bg);
}

.hero {
  padding: 4.5rem 0 3.5rem;
  background: linear-gradient(135deg, #eef2ff, #eff6ff);
}

.hero-small {
  padding: 3rem 0 2rem;
}

.hero-inner {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

@media (min-width: 768px) {
  .hero-inner {
    flex-direction: row;
    align-items: center;
  }
}

.hero-text {
  flex: 2;
}

.hero-visual {
  flex: 1.3;
}

.hero h1 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

@media (min-width: 768px) {
  .hero h1 {
    font-size: 2.4rem;
  }
}

.lead {
  font-size: 1.1rem;
  color: var(--color-muted);
  max-width: 38rem;
}

.hero-actions {
  margin: 1.5rem 0 0.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.trust-text {
  font-size: 0.9rem;
  color: var(--color-muted);
}

/* Header */

.site-header {
  border-bottom: 1px solid var(--color-border);
  background-color: #ffffff;
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0;
}

.logo {
  font-weight: 700;
  text-decoration: none;
  color: var(--color-secondary);
}

.main-nav a {
  margin-left: 1rem;
  text-decoration: none;
  font-size: 0.95rem;
  color: var(--color-muted);
}

.main-nav a.active {
  color: var(--color-primary);
  font-weight: 600;
}

/* Buttons */

.btn {
  display: inline-block;
  padding: 0.6rem 1.2rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  text-align: center;
}

.btn-primary {
  background-color: var(--color-primary);
  color: #ffffff;
}

.btn-secondary {
  background-color: #ffffff;
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-small {
  padding: 0.35rem 0.9rem;
  font-size: 0.85rem;
}

.btn-full {
  width: 100%;
}

/* Cards, grids */

.card {
  background-color: #ffffff;
  border-radius: 0.75rem;
  border: 1px solid var(--color-border);
  padding: 1.25rem;
  box-shadow: 0 6px 20px rgba(15, 23, 42, 0.03);
}

.hero-card {
  margin-top: 1rem;
}

.grid {
  display: grid;
  gap: 1.5rem;
}

.grid-3 {
  grid-template-columns: 1fr;
}

@media (min-width: 900px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.checklist {
  list-style: none;
  padding-left: 0;
  margin: 0.75rem 0 1rem;
}

.checklist li::before {
  content: "• ";
  color: var(--color-primary);
  font-weight: 700;
}

.center-text {
  text-align: center;
}

.mt-lg {
  margin-top: 2rem;
}

/* FAQs */

.faq-item + .faq-item {
  margin-top: 1rem;
}

.faq-item h3 {
  margin-bottom: 0.25rem;
}

/* Modules list */

.modules-list {
  display: grid;
  gap: 1.5rem;
}

.module-card h3 {
  margin-top: 0;
}

.text-link {
  color: var(--color-primary);
  text-decoration: none;
  font-size: 0.9rem;
}

.locked-hint {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.85rem;
  color: var(--color-muted);
}

/* Steps */

.step-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.8rem;
  height: 1.8rem;
  border-radius: 999px;
  background-color: var(--color-primary-soft);
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

/* Module pages */

.module-content h2 {
  margin-top: 2rem;
}

.module-content .quote {
  border-left: 3px solid var(--color-primary);
  padding-left: 0.75rem;
  color: var(--color-muted);
  font-style: italic;
}

/* Quiz */

.quiz {
  margin-top: 1.5rem;
  border-radius: 0.75rem;
  border: 1px solid var(--color-border);
  padding: 1.25rem;
  background-color: #ffffff;
}

.quiz-question + .quiz-question {
  margin-top: 1rem;
}

.quiz-question p {
  margin-bottom: 0.35rem;
}

.quiz label {
  display: block;
  font-size: 0.93rem;
  margin-bottom: 0.15rem;
  cursor: pointer;
}

.quiz-result {
  margin-top: 1rem;
  font-weight: 500;
}

.quiz-result.success {
  color: #15803d;
}

.quiz-result.error {
  color: #b91c1c;
}

.next-module {
  margin-top: 1.5rem;
  padding: 1rem 1.25rem;
  border-radius: 0.75rem;
  background-color: #ecfdf5;
  border: 1px solid #bbf7d0;
}

/* Forum placeholder */

.forum-placeholder {
  margin-top: 2rem;
  padding: 1.25rem;
  border-radius: 0.75rem;
  background-color: #fefce8;
  border: 1px solid #facc15;
}

/* Footer */

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 1rem 0;
  margin-top: 3rem;
  background-color: #ffffff;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.85rem;
}

.footer-nav a {
  margin-left: 0.75rem;
  text-decoration: none;
  color: var(--color-muted);
}